Mechanical movement.



PATENTED JAN. 3, 1905.

P. G0LDMANN. MECHANICAL MGVEMENT.

APPLICATION FILED HAY 21. 1903.

WITNESSES:

ATTORNEY lUNTTED STATES PHILIPI; GOLDMANN,

Patented January 3, 1905.

OF NEW YORK, N. Y.

MECHANICAL MOVEMENT.

SPECIFICATION forming part of Letters Patent No. '778.855, dated January3, 1905.

Application filed May 2l, 1903. Serial No. 158,186.

To all w/wm, it may concern:

Be it known that I, PHILIrr GOLDMANN, a citizen of the United States,residing in Manhattan borough, New York city, in thecounty and State ofNew York, have invented new and useful Improvements in MechanicalMovements,of which the following is a` specification.

This invention relates to a mechanical movement or device for convertingoscillating into rotary motion. The power transmitted can be utilized asseen lit-for example, to drive sewing machines or other devices, cuttingdisks or knives, and elsewhere, as occasion may serve. v

This invention is set forth in the following specification and claim,and illustrated in the annexed drawings, in which- Figure 1 is a sideelevation of a movement embodying this invention. Fig. 2 is an end viewof Fig. l. Fig. 3 is a view of a ratchet and dogs. Fig. 4 is a sectionalong m m, Fig. 3.

In the drawings is shown a frame a, to which at m is pivoted a swingingarm b, having racks e e. The rack e engages gear L and rack c engagesgear 7L. These two gears are loose on shaft n, but by pawls 0 engageratehets p and p, fast on said shaft. As the racks move in onedirection, the rack e and gear L by their pawl engage ratchet p torotate the shaft n in one direction, and during this stroke the pawl ofgear /t' slips or runs idle. On the return stroke of the racks the racke, with its gear lt', is in engagement and gear it is idle, as its pawlnow slips. By this alternate engagement and release of gears L /L andratchets pp thereciprocations of the racks produce continuous rotationof theshaft a in the same direction.

The handle or pedal or other power-transmitter (Z can be made toreciprocate the racks.

A tra-in of gears c' can be used to translate the rotation as requiredfor giving increased velocityito shaft j'. Y

In place of segmental racks e d, as shown, said racks can be carriedentirely about the pivot or center m and additional gears, as /L it',applied at suitable points, the racks e e oscillating about the centeror pivot m.

The carrier b, as seen, swings on the fixed point m, and theratchet-wheels p and p rotate about the shaft n or the fixed axis ofsaid shaft as a center. As the racks by means of the gears and pawls arecaused to alternately engage the ratchet-wheels when swinging back andforth, rotation of shaft n in the same direction is produced.

The rack e can be provided with inner and outer gear-teeth, the outerrow being adapted to act, if required, like the convex row of gears e.

A reversing arrangement can be provided at any suitable point forcausing the shaft n to be turned or driven backward.

In addition to the pawls o and ratchetsp p a second set of pawls 02 andratchets p2 p3 are shown. The second set of pawls and ratchets are madeto drive the shaft n backward or to produce rotation of the shaft in theopposite direction to that of the pawls 0 and ratchets p p. A disk g, orrather a pair of disks, have studs r. As each disk is turned or set forthe tail of pawl 0 to be pressed by a stud such pawl is lifted out ofengagement, while the oppositely-facing pawl 02 is cleared to take holdof or engage its ratchet. A return of the settingdisk will hold pawl l02out of action and allow pawl o to come to engagement.

As one pawl or the opposite facing one is in engagement the oscillationof the racks causes the shaft n to turn one way or the reverse. Y

The disk or setter q can be shifted by a trigger or spring-pressedhandle s, which is in toothed form to engage the toothed edge of disk gand shift the same one way or another. By pressing the reverser to thedisk and then Yswinging such reverser s about pivot t a shift or reverseis effected. Stops u can be applied to limit the swing of reverser s onpivot t. By means of this device a continuous rotation of the shaft n iseected by a swinging or reciprocating motion of the racks. N'odeadcenter can occur, as in case of a crank, and any suitable motivepower can be employed.

The mechanism can be made of desired size and applied in such positionor locality as required and suitable and in places where an all-roundcrank motion is not applicable.

The lever or handle can be made of such length as needed to obtain anydesired leverage or power and operated from any suitable point. Thestroke of the racks need not be carried to the eXtreme limit of play, asthe racks will engage or start the rotation at any point of the stroke.Levers or pedals suitably adjusted or set and connected or geared to theracks can, for example, be used to propel a vehicle or conveyance with adriving-wheel ofwhich the device is connected.

The rack-teeth in Fig. 4 are shown as studs provided withantifriction-rollers. Antifriction devices can be applied to the wheelor to the racks, or to both.

What I claim as new', and desire to secure by Letters Patent, is

An oscillating arm, racks connected to the arm, gears driven by theracks, oppositelyacting pawls and ratchets driven by the gears,releasing-studs for the pawls, carrying-disks for the studs, and ahandle for setting the disks.

ln testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

PHILIPP GOLDMANN. Witnesses:

E. F. KASTENHUBER, CHAs. E. PoENsGEN.

